libzvbi - VBI decoding library

  Copyright (C) 2000-2007 Michael H. Schimek
  Copyright (C) 2000-2001 Iñaki García Etxebarria
  Copyright (C) 2003-2004 Tom Zoerner
	
  Based on AleVT 1.5.1
  Copyright (C) 1998, 1999 Edgar Toernig

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  --------------------------------------------------------------------------

  Introduction
  ============

  The vertical blanking interval (VBI) is an interval in a television signal
  that temporarily suspends transmission of the signal for the electron gun
  to move back up to the first line of the television screen to trace the
  next screen field. The vertical blanking interval can be used to carry
  data, since anything sent during the VBI would naturally not be displayed;
  various test signals, closed captioning, and other digital data can be
  sent during this time period. 

  The zvbi library provides functions to read from Linux V4L, V4L2 and
  FreeBSD BKTR raw VBI capture devices, from Linux DVB devices and from a
  VBI proxy to share V4L and V4L2 VBI devices between multiple applications.

  It can demodulate raw to sliced VBI data in software, with support for
  a wide range of formats, has functions to decode several popular services
  including Teletext and Closed Caption, a Teletext cache with search
  function, various text export and rendering functions.

  Basically zvbi offers all functions needed by VBI applications except for
  the user interface. The library was written for the Zapping TV viewer
  http://zapping.sourceforge.net.

  For details on using the library see the documentation in doc/html (built
  only if you have Doxygen http://www.doxygen.org/) and the files in the
  test directory.

  Download
  ========

  The latest version is available from http://zapping.sourceforge.net.

  Installation
  ============

  If you checked out the source from CVS, run "./autogen.sh" to create
  configuration and make files.

  To build and install type "./configure", "make", "make check" if you
  want to run some tests, and "make install".

  For additional instructions see the INSTALL file.

  The library has been tested on Linux and FreeBSD.

  Ideas, questions, patches and bug reports
  =========================================

  Sourceforge tracker:

    https://sourceforge.net/tracker/?group_id=2599

  Please leave an e-mail address for questions and progress notification.
  Or send a message to the Zapping mailing list:

    zapping-misc@lists.sourceforge.net

  Subscribe at:

    http://lists.sourceforge.net/lists/listinfo/zapping-misc

  Subscription is not necessary, but the spam checker might delay
  your messages. Primary author and maintainer of this library is

    Michael Schimek <mschimek@users.sourceforge.net>
    Public key: gpg --import <AUTHORS